Dog Star
Western Thunderer
I guess that most of us reckon that we are savvy about the diameter and spokes of wagon wheels... and probably OK with details of coach wheels... and are au-fait with details of the driving wheels for our favourite engines. Fine... or so I thought. I now realise that all of the preceeding knowledge comes to naught when faced with First Generation Diesel Multiple Units - those "Heritage" units which are to be found on many preservation railways.
So first question... what is the nominal tread diameter of the wheels for powered and non-powered bogies? If it helps, I am interested particularly in wheels for the Derby Class 108.
Next question... there are 3-hole disc wagon wheels and 2 (or 4) hole disc carriage wheels... how many holes in wheels for DMUs? Again, interested specifically in Cl.108.
regards, Graham
So first question... what is the nominal tread diameter of the wheels for powered and non-powered bogies? If it helps, I am interested particularly in wheels for the Derby Class 108.
Next question... there are 3-hole disc wagon wheels and 2 (or 4) hole disc carriage wheels... how many holes in wheels for DMUs? Again, interested specifically in Cl.108.
regards, Graham